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(2). (1) Sementes Farropilha, Patos de Minas,
MG, Brazil, (2) Texas Tech University, Lubbock,
TX, U.S.A., (3) Texas Tech University, Lubbock,
TX, U.S.A. / UFLA, Lavras, MG, Brazil, (4)
UFLA, Lavras, MG, Brazil
10:00 a.m. O-111. Endospore-forming bacterial endophytes
of cacao: Ecology and biological control of
witches’ broom. R. L. MELNICK (3), C. Suárez
(1), D. I. Vera (1), B. A. Bailey (2), P. A. Backman
(3). (1) Instituto Nacional de Investigaciones
Agropecuarias, Estación Experimental Tropical
Pichilingue, Quevedo, Los Rios, Ecuador, (2)
SPCL, USDA-ARS, Beltsville, MD, U.S.A., (3)
The Pennsylvania State University, University
Park, PA, U.S.A.
10:15 a.m. O-112. Sequence-directed isolation of novel
bacteria contributing to soil-borne disease
suppression. M. BENITEZ (1), B. B. McSpadden
Gardener (1). (1) The Ohio State University,
OARDC, Wooster, OH, U.S.A.
10:30 a.m. BREAK
10:45 a.m. O-113. Pythium oligandrum biocontrol: Influence
on fungal populations’ dynamics and plant
resistance. J. VALLANCE (1), G. Le Floch
(1), F. Déniel (1), P. Rey (2). (1) Laboratoire
Universitaire de Biodiversité et Ecologie
Microbienne (EA3882), Plouzané, France, (2)
UMR Santé Végétale, ENITAB, Bordeaux, France
11:00 a.m. O-114. Role of G protein in Coniothyrium
minitans during directional growth towards
exudates of Sclerotinia sclerotiorum and S. minor.
P. CHITRAMPALAM (1), B. M. Pryor (1). (1)
University of Arizona, Tucson, AZ, U.S.A.
11:15 a.m. O-115. Development of biologically-based
management strategies for postharvest disease
control on apples. A. M. POLEATEWICH (1),
P. A. Backman (1), J. Travis (1). (1) Penn State
University, University Park, PA
11:30 a.m. O-116. Using remote sensing to evaluate
the efficacy of inoculative biocontrol. S.
CHAUDHARY (1), A. Davelos Baines (1), K.
Summy (1), C. R. Little (2). (1) Department of
Biology, The University of Texas – Pan American,
Edinburg, TX, U.S.A., (2) Department of Plant
Pathology, Kansas State University, Manhattan,
KS, U.S.A.
11:45 a.m. O-117. A tolerant relative protects tomato against
a virulent Verticillium. H. O. SHITTU (1), R.
N. Nazar (1), J. E. Robb (1). (1) University of
Guelph, Guelph, Ontario, Canada
Fungal: Diversity
9:00 a.m. – 12:00 p.m. * 208 AB
Section: Biology of Plant Pathogens
9:00 a.m. O-118. Investigating sources of genetic variability
of Phytophthora nicotianae, the causal agent of
black shank of tobacco in NC. C. A. GALLUP
(1), K. L. Ivors (1), H. Shew (1). (1) North
Carolina State University, Plant Pathology,
Raleigh, NC, U.S.A.
9:15 a.m. O-119. Population biology of Verticillium
dahliae isolates from lettuce in the Salinas
Valley of California. Z. K. ATALLAH (2),
K. Maruthachalam (2), R. J. Hayes (1), S. J.
Klosterman (1), K. V. Subbarao (2). (1) USDA-
ARS, Salinas, CA, U.S.A., (2) University of
California-Davis, Salinas, CA, U.S.A.
9:30 a.m. O-120. Genetic structure of populations of
the tobacco blue mold pathogen, Peronospora
tabacina in North America, Central America
and the Caribbean and Europe. M. BLANCO-
MENESES (1), I. Carbone (1), K. Ivors (1), J. B.
Ristaino (1). (1) North Carolina State University,
U.S.A.
9:45 a.m. O-121. Lack of genetic differentiation between
Puccinia triticina collections from North and
South America. M. E. ORDONEZ (1), J. A.
Kolmer (1). (1) ARS-Cereal Disease Laboratory
10:00 a.m. O-122. Host specificity and population
structure of Aspergillus section Flavi in sugarcane
production areas in the Rio Grande Valley of
Texas. N. P. GARBER (1), P. J. Cotty (2). (1) The
University of Arizona, Tucson, AZ, U.S.A., (2)
USDA-ARS, The University of Arizona, Tucson,
AZ, U.S.A.
10:15 a.m. O-123. Phylogenetics and population biology of
a monophyletic group within the F. solani species
complex that is widely associated with human
infections. D. P. SHORT (2), N. Zhang (1), K.
O’Donnell (3), D. Geiser (2). (1) Department of
Plant Pathology, Cornell University, Geneva, NY,
U.S.A., (2) Department of Plant Pathology, Penn
State University, University Park, PA, U.S.A., (3)
Microbial Genomics and Bioprocessing Research
Unit, Agricultural Research Service, USDA,
Peoria, IL, U.S.A.
10:30 a.m. BREAK
10:45 a.m. O-124. Phylogenetic analysis of the ITS1 and
ITS2 rDNA regions of Lycoperdaceae associated
with fairy rings on golf putting greens. G. L.
MILLER (1), L. P. Tredway (1). (1) North
Carolina State University, U.S.A.
11:00 a.m. O-125. High diversity of Botryosphaeria
species from almond band and canopy cankers
in California. P. INDERBITZIN (1), T. J.
Michailides (1). (1) UC Davis, Kearney Ag
Center, Parlier, CA, U.S.A.
11:15 a.m. O-126. Taxonomic complexity of powdery
mildew pathogens found on lentil and pea in the
U.S. Pacific Northwest. R. P. ATTANAYAKE (3),
D. Glawe (4), K. McPhee (1), F. Dugan (1), W.
Chen (2). (1) USDA ARS, Pullman, WA, U.S.A.,
(2) USDA ARS, Washington State University,
(3) Washington State University, Pullman, WA,
U.S.A., (4) Washington State University, and
University of Washington, Seattle, WA, U.S.A.
11:30 a.m. O-127. Analysis of molecular variability among
the isolates of Verticillium dahliae from diverse
host species based on fluorescence-based
amplified fragment length polymorphism. M.
KARUNAKARAN (2), G. E. Vallad (3), Z. K.
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